app: small comment tweak

Signed-off-by: David Aguilar <davvid@gmail.com>
docs: ditch asciidoc and double-down on sphinx

Rewrite the man pages using restructured text.  Eliminate all remnants
of asciidoc so that we only need a single documentation toolchain
(sphinx-build) to build git-cola.

Signed-off-by: David Aguilar <davvid@gmail.com>
source: add symlinks for docs and html

Signed-off-by: David Aguilar <davvid@gmail.com>
resources: use a file:// URL for local files

Signed-off-by: David Aguilar <davvid@gmail.com>